Finding the Fourth Proportional to 68.53, 102.79 and 27.99
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Solution
The fourth proportional to 68.53, 102.79 and 27.99 is: 41.98
Step by Step Solution
- Step 1: Write the proportion equation
68.53 : 102.79 = 27.99 : x - Step 2: Convert to fraction form
68.53/102.79 = 27.99/x - Step 3: Cross multiply
68.53x = 102.79 × 27.99 - Step 4: Simplify right side
68.53x = 2,876.79 - Step 5: Solve for x
x = 2,876.79/68.53 - Step 6: Final answer
x = 41.98
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.